Calculate sum of all your chat time with someone in telegram.
Before run the code you should Change the Telegram connection security settings in CreateTelegramClient method.
First, make your own Telegram Client then replace the information that telegram gave you.
Just pick one of telegram RSA Public keys and replace in the code.
This app dosent sent your telegram security info any where and its safe!!! you can check the whole code before use it.
Its HobbyTime project 😄.